The corrections that I have.....

166.82.50.239

Posted by Clayton Oxendine on March 7, 2001 at 23:46:06

In Reply to: Actually, we need Clayton on this one.... posted by Sean on March 7, 2001 at 21:48:29:

Where verified by some guy who used maybe twenty different RS analog meters and he calibrated them against a $4000 mic. I have also verified the respose chart I have with a Mighty Mike II which is not an ultra expensive mic, but is very accurate. I did the test outside with the speaker laying in a hole so that the ground acted as an infinate baffle and there wgere no room relections. The response I came up with was virtually the same as the orginal response. In other words, the RS mic starts slowly rolling off below 125 Hz, and it really rolls off on the top end. For anyone who wants it again, here is the response correction for the analog. Beware that the response for the digital can vary greatly from unit to unit. Note below that all response corrections are added.

.______________________________________________________________________ 20HZ 6.2DB
25 ______________________________________________________________________25HZ=4.4DB
31.5 ________________________________________________________________________31.5HZ=3DB
40 ________________________________________________________________________40HZ =2DB
50 ________________________________________________________________________50 =1.3DB
63 ________________________________________________________________________ 63HZ =.8DB
80 ________________________________________________________________________ 80 HZ =.5DB
100 ________________________________________________________________________100HZ =.3DB
125 ________________________________________________________________________125HZ =.2DB
160 ________________________________________________________________________160 =.1DB
200 _Start___________________________________________________________________ Flat
250 ________________________________________________________________________ Flat
315 ________________________________________________________________________ Flat
400 ________________________________________________________________________ Flat
500 ________________________________________________________________________ Flat
630 ________________________________________________________________________ Flat
800 ________________________________________________________________________ Flat
1kH________________________________________________________________________ Flat
1.25________________________________________________________________________ Flat
1.6 ________________________________________________________________________1600HZ = .1DB
2 ________________________________________________________________________2000HZ =.2DB
2.5 _Start___________________________________________________________________ 2500HZ =.3DB
3.15________________________________________________________________________3150HZ =.5DB
4 ________________________________________________________________________4KHZ =.8DB
5 ________________________________________________________________________5KHZ =1.3DB
6.3 ________________________________________________________________________6.3KHZ =2DB
8 ________________________________________________________________________8KHZ =3DB
10 ________________________________________________________________________10KHZ =4.4DB
12.5________________________________________________________________________12.5KHZ =6.2DB
16 ________________________________________________________________________16KHZ =8.5DB
20 ________________________________________________________________________20KHZ =11.2DB

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Follow Ups Full Thread

Topic - any suggestions for an SPL meter for loooow frequencies? - Mikenificent1 08:42:48 03/07/01 (30)

Maybe there is another way to see if these frequencies... - mikenificent1 21:02:32 03/07/01 (2)

I don't really know why.... - SR 09:57:10 03/08/01 (1)

Curiosity - mikenificent1 07:12:39 03/09/01 (0)

ok....as a trained biologist, have you seen any elephants, or - petew 14:44:44 03/07/01 (8)

LOL, No elephants or whales... - mikenificent1 20:59:29 03/07/01 (0)

Re: ok....as a trained biologist, have you seen any elephants, or - Adi 17:43:42 03/07/01 (3)

Don't Forget That Coke Bottles are Evil and - rcrump 21:47:43 03/07/01 (2)

That Coke Bottles are Evil - Adi 09:34:14 03/08/01 (1)

The Gods Must Be Crazy! (nt) - rcrump 09:51:07 03/08/01 (0)

Mothra Research, as I recall, made - rcrump 17:34:07 03/07/01 (2)

Any links? - mikenificent1 20:55:21 03/07/01 (1)

There were several severe cases - rcrump 21:35:13 03/07/01 (0)

Barometer? - jj 12:28:05 03/07/01 (4)

the one about the physics final? - petew 20:42:36 03/07/01 (2)

Re: the one about the physics final? - Randy Bey 21:43:22 03/07/01 (1)

Did you mean the companion star to Sirius A and Sirius B? - jj 01:05:50 03/08/01 (0)

Seismograph :-) (NT) - Batman 13:47:50 03/07/01 (0)

Re: any suggestions for an SPL meter for loooow frequencies? - Sean 11:53:17 03/07/01 (12)

Re: any suggestions for an SPL meter for loooow frequencies? - mikenificent1 20:52:21 03/07/01 (1)

Re: any suggestions for an SPL meter for loooow frequencies? - Sean 21:39:17 03/07/01 (0)

Hey Sean ... - StephÃ¦n 13:04:12 03/07/01 (9)

SPL meters... - RichardH 13:19:45 03/07/01 (8)

Re: SPL meters... - carl 21:27:46 03/07/01 (7)

Thanks Richard - Sean 21:37:40 03/07/01 (6)

Actually, we need Clayton on this one.... - Sean 21:48:29 03/07/01 (5)

The corrections that I have..... - Clayton Oxendine 23:46:06 03/07/01 (4)

Re: The corrections that I have..... - Sean 00:20:56 03/08/01 (3)

Thanks for the input, guys ... - StephÃ¦n 14:38:35 03/08/01 (2)

Re: Thanks for the input, guys ... - Sean 23:34:00 03/08/01 (1)

Re: Thanks for the input, guys ... - StephÃ¦n 13:20:55 03/09/01 (0)

Follow Ups

The corrections that I have..... - Clayton Oxendine 23:46:06 03/07/01 (4)

Re: The corrections that I have..... - Sean 00:20:56 03/08/01 (3)

Thanks for the input, guys ... - StephÃ¦n 14:38:35 03/08/01 (2)

Re: Thanks for the input, guys ... - Sean 23:34:00 03/08/01 (1)

Re: Thanks for the input, guys ... - StephÃ¦n 13:20:55 03/09/01 (0)

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